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      1 /*
      2 **
      3 ** Copyright 2017, The Android Open Source Project
      4 **
      5 ** Licensed under the Apache License, Version 2.0 (the "License");
      6 ** you may not use this file except in compliance with the License.
      7 ** You may obtain a copy of the License at
      8 **
      9 **     http://www.apache.org/licenses/LICENSE-2.0
     10 **
     11 ** Unless required by applicable law or agreed to in writing, software
     12 ** distributed under the License is distributed on an "AS IS" BASIS,
     13 ** WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
     14 ** See the License for the specific language governing permissions and
     15 ** limitations under the License.
     16 */
     17 
     18 #ifndef CONFIRMATIONUI_1_0_DEFAULT_PLATFORMSPECIFICS_H_
     19 #define CONFIRMATIONUI_1_0_DEFAULT_PLATFORMSPECIFICS_H_
     20 
     21 #include <stdint.h>
     22 #include <time.h>
     23 
     24 #include <android/hardware/confirmationui/1.0/IConfirmationResultCallback.h>
     25 #include <android/hardware/confirmationui/1.0/generic/GenericOperation.h>
     26 #include <android/hardware/confirmationui/support/confirmationui_utils.h>
     27 
     28 namespace android {
     29 namespace hardware {
     30 namespace confirmationui {
     31 namespace V1_0 {
     32 namespace implementation {
     33 
     34 struct MonotonicClockTimeStamper {
     35     class TimeStamp {
     36        public:
     37         explicit TimeStamp(uint64_t ts) : timestamp_(ts), ok_(true) {}
     38         TimeStamp() : timestamp_(0), ok_(false) {}
     39         bool isOk() const { return ok_; }
     40         operator const uint64_t() const { return timestamp_; }
     41 
     42        private:
     43         uint64_t timestamp_;
     44         bool ok_;
     45     };
     46     static TimeStamp now();
     47 };
     48 
     49 class HMacImplementation {
     50    public:
     51     static support::NullOr<support::hmac_t> hmac256(
     52         const support::auth_token_key_t& key,
     53         std::initializer_list<support::ByteBufferProxy> buffers);
     54 };
     55 
     56 class MyOperation : public generic::Operation<sp<IConfirmationResultCallback>,
     57                                               MonotonicClockTimeStamper, HMacImplementation> {
     58    public:
     59     static MyOperation& get() {
     60         static MyOperation op;
     61         return op;
     62     }
     63 };
     64 
     65 }  // namespace implementation
     66 }  // namespace V1_0
     67 }  // namespace confirmationui
     68 }  // namespace hardware
     69 }  // namespace android
     70 
     71 #endif  // CONFIRMATIONUI_1_0_DEFAULT_PLATFORMSPECIFICS_H_
     72